<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            background-color: #000;
        }
        .container {
            margin: 50px auto;
            text-align: center;
            filter: contrast(5);
            .textBox {
                color: #FFF;
                font-size: 42px;
                font-weight: bold;
                /* letter-spacing: -28px; */
                animation: zhankai 2.4s ease-out forwards;
            }  
        }
        @keyframes zhankai {
            0% {
                letter-spacing: -28px;
                filter: blur(4px);
            }
            5% {
                letter-spacing: -28px;
                filter: blur(4px);
            }
            100% {
                filter: blur(0px);
                letter-spacing: 2px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="textBox">HELLO WORLD</div>
    </div>
</body>
</html>